Medical stents for body lumens exhibiting peristaltic motion

US5876445A · kind A · utility

Assignee

• Boston Scientific Limited · BB

Inventors

• Erik Andersen · Gurnee, US
• Ernst Peter Strecker · Karlsruhe, DE
• Kathleen L. Hess · Lynn, US
• Susanne Urhoj · Copenhagen, DK

Key dates

• Filing date: Nov 26, 1996
• Grant date: Mar 2, 1999
• Expiry date: Nov 26, 2016

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D10B2509/06
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Methods for forming, shaping and heat treating stents for reinforcement of the lumen of peristaltic organs. The stent is formed by knitting preferably a nitinol wire into a pattern of overlapping loops selected such that from a relaxed state each row of loops may shift axially relative to and independently of the rows on either side. This local lengthening and shortening accommodates peristalsis of the organ without migrating within the organ.